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Previous studies have concluded that the Hall magnetic field structuresgenerated during magnetic reconnection are carried away by kinetic Alfv\'{e}nwaves (KAW). Here we apply a kinetic simulation with an ion/electron mass ratiocloser to its natural value and find that much-reduced damping rates permit theKAW to convert into shear Alfv\'{e}n waves (SAW). For magnetotail reconnectionthese SAW provides efficient transport of wave energy, enhancing the energyinput for the Aurora Borealis by orders of magnitude above previous estimates.

Mode Converting Alfv\'{e}n Waves from Magnetic Reconnection Enhancing the Energy Source for the Aurora Borealis